General Information: DTC Detecting Condition
DTC DETECTING CONDITION AND POSSIBLE CAUSES
| Item |
Detecting Condition |
Possible Cause |
| DTC Strategy |
- Plausibility check: signal noise check
|
- Open or short circuit between HO2S signal circuit and ECM
- Open or short circuit between HO2S ground circuit and ECM
- Faulty Heated O2 Sensor (HO2S)
|
| Enable Conditions |
- Coolant temperature > 76°C (168.8°F)
- Air temperature at start > -7°C (19.4°F)
- Vehicle speed < 5 km/h (3.1 mph)
- Time after start > 590 sec.
- Estimated altitude < 2800 m (9185 ft)
- Limited canister saturation
- Minimum canister purge time: 3~25 sec.
- Idle speed engine operating state
- Fuel tank pressure: -0.8~0.55 kPa (-0.0082~0.0056 kg/cm2, - 0.116~0.079 psi)
- No relevant failure
- Battery voltage > 11V
|
|
| Threshold Value |
- Difference between max.-min > 0.05 kPa (0.0005 kg/cm2
, 0.0073 psi) (during 28 cycles with signal fluctuation period)
|
| Diagnostic Time |
- 14 sec. in Idle when all Enable Conditions fulfilled
|
| Fail Safe |
|